American Power Conversion 750 VA User Manual

Page 14

ROBLEM AND

OSSIBLE

AUSE

OLUTION

HERE IS NO

TILITY POWER AND THE

UPS

HAS BEEN TURNED OFF

120V/230V Models: When the
UPS is off and there is no utility
power, use the cold start feature to
apply power to the connected
equipment from the UPS battery.
Cold start is not a normal condi-
tion.

Press and hold the

button, (for about 3 seconds). The unit will

beep, the LED lights will flash, and the unit will beep a second time.
Release the ON button during the second beep. This will supply imme-
diate power to the UPS and the connected equipment. Make sure con-
nected equipment is switched to ON.

UPS

OPERATES ON BATTERY ALTHOUGH NORMAL LINE VOLTAGE EXISTS

UPS input circuit breaker tripped.

Reduce the load on the UPS by unplugging equipment and resetting the
circuit breaker (on the back of UPS) by pressing the plunger in.

Very high, low, or distorted line
voltage. Inexpensive fuel powered
generators can distort the voltage.

Move the UPS to a different outlet on a different circuit. Test the input
voltage with the utility voltage display (see below). If acceptable to the
connected equipment, reduce the UPS sensitivity.

ATTERY

HARGE AND

ATTERY

OAD

LED

S FLASH SIMULTANEOUSLY

The internal temperature of the
UPS has exceeded the allowable
threshold for safe operation.

Check that the room temperature is within the specified limits for opera-
tion.

Check that the UPS is properly installed allowing for adequate ventila-
tion.

Allow the UPS to cool down. Restart the UPS. If the problem continues
contact APC at,

www.apc.com/supoport

IAGNOSTIC

TILITY

OLTAGE

EATURE

Utility Voltage

The UPS has a diagnostic feature that displays the utility voltage. Plug
the UPS into the normal utility power.

Press and hold the

button to view the utility voltage bar graph dis-

play. After a few seconds the five-LED, Battery Charge,

, display on

the right of the front panel shows the utility input voltage.
Refer to the figure at left for the voltage reading (values are not listed on
the UPS).
The display indicates the voltage is between the displayed value on the
list and the next higher value.
Three LEDs light, indicating utility voltage within the normal range.
If no LEDs are lit and the UPS is plugged into a working utility power
outlet, the line voltage is extremely low.
If all five LEDs are lit, the line voltage is extremely high and should be
checked by an electrician.

The UPS starts a self-test as part of this procedure. The self-test does not affect the voltage display.